Mechanistic Insights into Li+, Bi3+ Co-doped BaCeO3: Eu3+ phosphors - defect passivation and enhanced charge-transfer excited emission
BaCeO3 perovskites doped with Eu3+ ions exhibit strong charge-transfer (CT)-excited orange–red emission but suffer from oxygen-vacancy-induced non-radiative losses. In this study, Li+ and Bi3+ were introduced as aliovalent co-dopants to modulate defect chemistry and local symmetry in BaCeO3: Eu3+ (BCE). A compositional series BaCe0.96−xEu0.04LixBixO3 (x = 0–0.04) was synthesized via gel combustion method. Structural refinements confirmed single-phase orthorhombic (Pnma) perov
Researchers have developed a new type of phosphor material based on barium cerate doped with lithium and bismuth ions, alongside europium. This co-doping strategy effectively reduces oxygen vacancies, which previously hindered the material's luminescence by causing energy loss. The modified material exhibits significantly enhanced orange-red emission when excited by ultraviolet light at 321 nm.
This advancement offers a more efficient and stable phosphor for applications requiring specific light emission characteristics, potentially improving technologies like solid-state lighting and displays.
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